Switching DSL phone jacks.
Hi, I currently have a DSL phone jack on the 2nd floor of my house and have had it there for many years. Now I want to move my DSL to a different room downstairs. I already have CAT-5 wire hooked up from the phonebox to the phone jack that I want the DSL to run through. I had both jacks hooked up at the same time (at first I didn't know you needed a splitter to do this) and only the original jack worked, the new one I set up didn't work even if the modem and router were completely disconnected from the original jack and hooked up to the new jack. I've looked at the set up many times and I am confident that I hooked up the new jack properly.
What I want to know is; to get the 2nd, new, jack to work do I have to completely disconnect the first one from the phone box, or do I have to call my ISP so they can reset the DSL, or what?(the line that is used for my DSL is a dedicated line if this helps)